| Paper | Title | Page |
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| TUPPH084 | Field Mapping System for KIRAMS-30 Cyclotron Magnet | 442 |
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| This paper presents a Hall probe mapping system for measuring a cyclotron magnet, which has been fabricated for the 30 MeV cyclotron at the Korea Institute of Radiological and Medical Sciences. The Hall probes are mounted on a precision mechanical stage and map magnetic field in the Cylindrical coordinate system. The mapping system uses the “flying” mode field mapping method to reduce data-acquisition time. The time required for mapping the whole gap-area of the cyclotron magnet is ~70 minutes. The relative random fluctuation error during the entire mapping process is less than ±0.02%. The cyclotron magnet has been corrected using field measurement data, and the achieved total phase excursion of the cyclotron after correction is less than ±15°, which is within the tolerance of ±20° for the total phase excursion. |